How can a stable vitamin K syrup for a dog be prepared such that 5 ml contains 37 mg of vitamin K (menadione sodium bisulfite) for twice-daily administration, considering that a formulation using 2.22 g of vitamin K dissolved in 150 ml of alcohol and diluted with syrupus simplex to 300 cc resulted in crystallization the following day?

According to a letter from the firm Leo regarding the launch of Dovobet, is it true that the combination of calcipotriol (Daivonex) and betamethasone dipropionate is fundamentally incompatible for stability reasons, and if so, what is the nature of this incompatibility and is it a sales tactic?

What is a suitable formula for a highly concentrated paracetamol syrup for an adult patient undergoing throat radiation who must take 1 g of paracetamol four times daily but has severe swallowing difficulties, given that effervescent tablets and sachets are unsuitable due to high salt content and the patient cannot swallow large volumes of liquid, and will such a concentrated syrup cause issues with swallowability?

How can an oral gel containing urea peroxide or carbamide peroxide be prepared in concentrations of 10%, 15%, and 20% for use in bleaching tooth enamel, as requested by a dentist?

Which excipient can be used to achieve the correct volume and prevent segregation when a sustained-release medication (containing small beads within the capsule) needs to be redistributed into a different dosage?

Can Ledertrexate tablets be crushed for processing into capsules, specifically in a case where a child needs to take six tablets and the doctor requested this formulation to reduce the number of pills?

Is it necessary to add a stabilizer when preparing 10-volume hydrogen peroxide, given that the concentrated solution is already stabilized with polyphosphates; if so, what substance and concentration should be added, and does this stabilizer have implications for ototoxicity in ear drops, and what is the optimal concentration of H2O2 for use in ear drops?